Question

Thing that is green in morning black in noon blue in evening and white at night

Answer 1

Answer: Algae is the correct answer.

Step-by-step explanation:

Algae looks green in the morning , black in the noon , blue in the evening and white in the night.

Algae changes color due to conditions of culture.

During low light intensity, algae release pigments which is more light absorbing for improving their efficiency of photosynthesis.

So in the morning , due to chlorophyll it looks green .

At noon due to high intensity of light , it looks black to absorb as much light as it can.

Similarly in the evening it looks blue due to little light and at night there is no light due to which it looks white in color.

Hence, algae is the correct answer.

Answer 2

The correct answer is: Algae

Step-by-step explanation:
If you observe the Algae on the sea from the top, you would see this phenomena due to the reflection of the algea, sea-water and the sunlight. As the position of the Sun (during day time) and the Moon (during night time) changes the colour of the Algae also changes, which is why it looks green in morning, black in noon, blue in evening and white at night.